M size Meta 5.5 for rider 165cm/5.4f

Hi there would need some help. I'm looking for a frame for my girlfriend and she's 165 cm/5,4 feet tall. Found an M size 07 meta 5.5 for reeeal cheap. What you think could it be built for a shotrer rider with short stem and non offset seatpost? Or would the stand over height ruin the inspiration for confidence that bike should give? Anubody know/could measure the exact stand ovet height of a M size meta? By the way Commencal recommends the height limit of 168cm for size M, so not that much off..?